Touch Projection Screen and Touch Projection System

1. A touch projection screen, comprising: a substrate, comprising a first surface and a second surface opposite to the first surface; a first touch layer, having a first active touch area and a first non-active touch area, disposed on the first surface of the substrate, and extending around a first edge of the substrate to cover a first part of the second surface of the substrate, wherein the first active touch area is disposed at the first surface of the substrate and the first non-active touch area having at least a first portion that is disposed only at a first edge portion of the second surface of the substrate and a second edge portion of the second surface of the substrate; a second touch layer, having a second active touch area and a second non-active touch area, disposed on the first touch layer, and extending around a second edge of the substrate to cover a second part of the second surface of the substrate, wherein the second active touch area is disposed at the first surface of the substrate and the second non-active touch area having at least a second portion that is disposed only at the second edge portion of the second surface of the substrate and a third edge portion of the second surface of the substrate; a reflective projection film, disposed on the second touch layer, wherein the reflective projection film is adapted to reflect an image beam from a projection device outside the touch projection screen, and the reflective projection film further extends around an edge of the substrate from the first surface of the substrate to cover a part of the second surface of the substrate; and a circuit board, disposed on the second surface of the substrate and electrically connected with the first touch layer and the second touch layer, wherein the first edge portion and the third edge portion are different, the first edge portion is perpendicular to the third edge portion, and the second edge portion is connected between the first edge portion and the third edge portion.

2. The touch projection screen of claim 1 , wherein the first touch layer comprises a first electrode circuit and a first gathering circuit adapted to electrically connect to the first electrode circuit, at least a part of the first electrode circuit is located at the first surface of the substrate, and the first gathering circuit is located at the second surface of the substrate and adapted to electrically connect with the circuit board.

3. The touch projection screen of claim 2 , further comprising: a first circuit gathering board, disposed on the second surface of the substrate; and a second gathering circuit of the second touch layer, disposed on the second surface of the substrate, wherein the first gathering circuit of the first touch layer is electrically connected to the circuit board through the first circuit gathering board, and the second gathering circuit of the second touch layer is electrically connected to the circuit board through a second circuit gathering board.

4. The touch projection screen of claim 3 , wherein the second touch layer comprises a second electrode circuit and the second gathering circuit adapted to electrically connect to the second electrode circuit, at least a part of the second electrode circuit is located at the first surface of the substrate, and the second gathering circuit is located at the second surface of the substrate and adapted to electrically connect to the circuit board.

5. The touch projection screen of claim 1 , further comprising: a pad, disposed on the second surface of the substrate, wherein a part of the first touch layer covering the second surface of the substrate is disposed directly on the pad, and a part of the second touch layer covering the second surface of the substrate is directly disposed on the pad.

6. The touch projection screen of claim 1 , further comprising: a pad, disposed on the second surface of the substrate, wherein a part of the first touch layer covering the second surface of the substrate is disposed directly on the pad, and the pad comprises an opening, and the circuit board is disposed at the opening.

7. The touch projection screen of claim 6 , wherein a depth of the opening is greater than or equal to a thickness of the circuit board.

8. The touch projection screen of claim 6 , wherein the substrate is a rigid board, and the pad is a flexible and soft pad.

9. The touch projection screen of claim 1 , wherein the first touch layer is formed by a plurality of first sub-touch layers aligned adjacent to each other.

10. The touch projection screen of claim 1 , wherein the second touch layer is formed by a plurality of second sub-touch layers aligned adjacent to each other.

11. The touch projection screen of claim 1 , wherein the substrate is formed by a plurality of sub-substrates aligned adjacent to each other.

12. The touch projection screen of claim 1 , wherein the reflective projection film is non-transparent.

13. A touch projection system, comprising: a projection device, adapted to project an image beam; and a touch projection screen, comprising: a substrate, comprising a first surface and a second surface opposite to the first surface; a first touch layer, having a first active touch area and a first non-active touch area, disposed on the first surface of the substrate, and extending around a first edge of the substrate to cover a first part of the second surface of the substrate, wherein the first active touch area is disposed at the first surface of the substrate and the first non-active touch area having at least a first portion that is disposed only at a first edge portion of the second surface of the substrate and a second edge portion of the second surface of the substrate; a second touch layer, having a second active touch area and a second non-active touch area, disposed on the first touch layer, and extending around a second edge of the substrate to cover a second part of the second surface of the substrate, wherein the second active touch area is disposed at the first surface of the substrate and the second non-active touch area having at least a second portion that is disposed only at the second edge portion of the second surface of the substrate and a third edge portion of the second surface of the substrate; a reflective projection film, disposed on the second touch layer, wherein the reflective projection film is adapted to reflect an image beam from a projection device outside the touch projection screen, and the reflective projection film further extends around an edge of the substrate from the first surface of the substrate to cover a part of the second surface of the substrate; and a circuit board, disposed on the second surface of the substrate and electrically connected with the first touch layer and the second touch layer, wherein the first edge portion and the third edge portion are different, the first edge portion is perpendicular to the third edge portion, and the second edge portion is connected between the first edge portion and the third edge portion.